Improvement in fasteners for the meeting-rails of sashes



UNITED STATES PATENT @ferrea SAMUEL MGNINCH, OF BOSTON, MASSACHUSETTS,

IMPROVEMENT IN FASTENERS FOR THE MEETING-RAILS OF SASHES.

Specification forming part of Letters Patent No. 178,543, dated June 13,1876; application filed May e, 1876.

To all whom it may concern:

Be it known that I, SAMUEL McNINoH, of Boston, Suffolk county,Massachusetts, have invented an Improved Sash-Lock, of which thefollowing is a specification:

This invention relates to sash-locks to be applied to the meeting-railsof the upper and lower sashes; and consists in the novel combination,with a spring-actuated locking-arm and a holder, of a springbolt tooperate the holder, and release the locking-arm, thereby permitting thespring to move the lockingarm to engage the knob ot' the spring-bolt,and secure the sash together, as hereinafter more fully described anddefinitely claimed. Figure l represents, in top view, a sash-lockprovided with my improvement, the full lines showing the parts in theposition they will occupy when the sashes are locked, and the dottedlines their position when the sash is not fastened; Fig. 2, a sectionshowing the sashes locked, and Fig. 3 a back view.

In the drawing, a represents the bottom rail of the top sash, and b thetop rail of the bottom sash. The locking-arm c, provided at its outerend with a notch, d, to engage the flanged button e, is pivoted on astud,f, projecting from the base g, provided with holes to receivescrews by which to attach the base to thevrail a. The hub h of thislocking-arm is shown as hollow to receive a spring, i, the tendency ofwhich is to move the arm in the direction of the arrow (see Fig. l)whenever the arm is not positively held in the position shown in dottedlines, Fig. l. This arm or hub has a project-ion, j, that enters betweenthe corner l ot' the base g, and a friction-roller or stud, le, on aholder, l, pivoted to the base at m, and having a long arm, fn, which isfree to vibrate horizontally' out and in a recess in the base. Thisholder is shown in dotted lines, Fig. l, in the position it will occupywhen the locking-lever ,is turned away from over the upper sash, and insuch position it will be observed that the projection j is held betweenthe roller k and corner l, retaining the arm with its free end backtoward the glass, and it will also be noticed that the long arm n of theholder then rests substantially flush with the front of the base g andthe upper front edge 3 of themeeting-rail ofthe top sash.

Suppose the locking-lever held back, as.

shown in dotted lines, Fig. l, and the holder retained flush -with thebase and sash edge. Now, it' the meetingrails are brought together, theend of the bolt or catch o will strike and pass the edge 4 ofthe base g,and then strike the end n of the holder, turning it on its pivot m,releasing the projection j, which frees the locking arm and permits itsspring t' to throw it into position across the top ot' the upper sashand into engagement with the catch-button e. In this condition it willbe obvious that the saslies are held or locked by three separatedevices, viz: the locking-arm c, extended across the top sash andengaging the button; the bolt or catch o. the end ot' which projectsunder the part 4 ot' the base g, the bolt being also held by thelocking-arin; and the holder which then extends across the top ot' thelower sash as a. button, (see full lines, Fig. 1,) the holderbeingretained in this position by the end of the bolt o. To separate the sashthe locking-arm must be turned to the right until projectionj meetscorner l, and then the holder must bc moved away from over the top ofthe lower sash, thereby bringing its roller against the project-ion j,and then the bolt or catch o must be drawn back against its spring.

It' desired, I may place a second springbolt, r, (as shown in dottedlines,) in the outer end of the locking-arm, it entering a hole in thebutton. At the back of the base is a corner, 2, that serves as a stopfor the projection j, to cause the locking-arm to stop at the properposition with reference to the button and top of lower sash.

The sashlock may be made of any material, and be finished as are othersash-locks, and may be applied to any sash Without cutting away themeeting-rails.

I claiml. A sash-lock, composed of the base g', the spring-actuatedlocking-arm c,a pivoted holder, l, for the arm, and a iiangcd button, e,and

the base g and holder Z, and adapted to operate the holder and retain itextended across the top ofthe lower sash, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

SAMUEL MGNINGH. Witnesses:

G. W. GREGORY, vL. H. LATIMER.

